Of all of my camera purchases I haven't tested or tried one in a local store. I do lots of research and then make an educated decision and buy it online. All of the local stores where I live do not even have a lot of the lenses that I want to try out anyways. And do I want a model that's been the "display" and tested out by hundreds of other goofs?
Especially since I live in Canada where are camera equipment is still outrageously priced compared to the US, I only buy online from the US. I just bought a 50L from B&H for 1184 where here in Canada it's $1699! Even with the prices lowering such a simple little great lens like the 50 1.4 is still $499.99 at Henry's when it's gone below $300 US at B&H.
If I get the product and for some reason it's not a good copy (which still hasn't happened) or is not what I need (never has happened yet as I always do insane research on what I DO need/want

) there is always great options for returning the item. I find that local stores offer very limiting options for return.
That said, I did play around with a 40D the other week at a London Drugs. I do want to buy one in about a half a years time and I just wanted to physically check it out. I don't feel too bad as London Drugs is huge chain store over hear and not the small mom&pop photo shop. I'd never buy it from them as it was $1599 CAN and on eBay there are US models selling for $979 CAN.
Even dealing with experienced photography expert salespeople isn't worth $600 price difference. I usually go into a store knowing what I want having researched for literally months...most of the time at these big chain/dept stores people go in for help on decisions...and they buy from that store and that's their perogative.
In Canada retailers will suffer and that's too bad because their hands are tied by the manufactures/distributors...but everyone passes on the complaints and something will eventually have to change: the customer doesn't buy and complains to the retailer which should in turn demand lower prices and complain to their manufactures and middle-men.
Anyways, sorry for the rambling, but I usually don't play then pay because they usually don't have what I want anyways and I already am pretty confident that I don't need to try it to know that I will like it. The 40D was just a curiousity.